<template>
  <div class="container">
    <div class="app-container">
      <div class="left">
        <el-input
          v-model="queryParams.keyword"
          style="margin-bottom:10px"
          type="text"
          prefix-icon="el-icon-search"
          size="small"
          placeholder="输入员工姓名全员搜索"
          @input="changeValue"
        />
        <!-- 树形组件 -->
        <el-tree
          ref="deptTree"
          node-key="id"
          :data="depts"
          :props="defaultProps"
          default-expand-all
          :expand-on-click-node="false"
          highlight-current
          @current-change="selectNode"
        />
      </div>

      <div class="right">
        <el-row class="opeate-tools" type="flex" justify="space-between">
          <el-button size="mini" @click="sendMultiMessage">群发通知</el-button>
          <div>

            <el-button
              v-permission="'add-permission'"
              size="mini"
              type="primary"
              @click="$router.push('/employee/detail')"
            >添加员工</el-button>

            <el-button size="mini" @click="showExcelDialog = true">excel导入</el-button>

            <el-button size="mini" @click="exportEmployee" @upload="selectNode">excel导出</el-button>
          </div>

        </el-row>

        <!-- 表格组件 -->
        <el-table
          ref="employeeTable"
          row-key="id"
          :data="employeeList"
          @select="selectChange"
          @select-all="selectChange"
        >
          <el-table-column type="selection" />
          <el-table-column align="center" label="头像">
            <template v-slot="{ row }">
              <el-avatar v-if="row.staffPhoto" :src="row.staffPhoto" :size="30" />
              <span v-else class="username">{{ row.username?.charAt(0) }}</span>
            </template>
          </el-table-column>
          <el-table-column label="姓名" prop="username" />
          <el-table-column label="手机号" sortable prop="mobile" />
          <el-table-column label="工号" sortable prop="workNumber" />
          <el-table-column label="聘用形式">
            <template v-slot="{ row }">
              {{ row.formOfEmployment === 1 ? '正式' : '非正式' }}
            </template>
          </el-table-column>
          <el-table-column label="部门" prop="departmentName" />
          <el-table-column label="入职时间" sortable prop="timeOfEntry" />
          <el-table-column label="操作" width="280px">
            <template #default="{ row }">
              <el-button
                v-permission="'detail-employee'"
                size="mini"
                type="text"
                @click="optEdit(row.id)"
              >查看</el-button>
              <el-button size="mini" type="text" style="margin-right:10px;" @click="btnRole(row.id)">角色</el-button>
              <el-popconfirm title="这是一段内容确定删除吗？" @onConfirm="delEmployee(row.id)">
                <el-button slot="reference" v-permission="'delete-employee'" size="mini" type="text">删除</el-button>
              </el-popconfirm>
            </template>

          </el-table-column>

        </el-table>

        <!-- 分页 -->
        <el-row style="height: 60px" align="middle" type="flex" justify="end">
          <el-pagination
            layout="total, prev, pager, next"
            :total="total"
            :current-page="queryParams.page"
            :page-size="queryParams.pagesize"
            @current-change="changePage"
          />
        </el-row>
        <!-- 分配角色弹层 -->
        <el-dialog :visible.sync="showRoleDialog" title="分配角色">
          <!-- 弹层内容 -->
          <el-checkbox-group v-model="roleIds">
            <!-- 放置n个的checkbox  要执行checkbox的存储值 item.id-->
            <el-checkbox v-for="item in roleList" :key="item.id" :label="item.id">{{ item.name }}</el-checkbox>

          </el-checkbox-group>
          <div style="text-align: center;margin-top: 12px;">
            <el-button size="mini" type="primary" @click="btnOK">confirm</el-button>
            <el-button size="mini" @click="btnCancel">cancel</el-button>
          </div>

        </el-dialog>
        <el-dialog title="群发通知" :visible.sync="showMultiMessageDialog">
          <div class="select_users">
            <el-tag v-for="item in all_users" :key="item.id" closable @close="delSendUser(item)">@{{ item.username
            }}</el-tag>
          </div>
          <el-form label-width="80px">
            <el-form-item label="消息等级">
              <el-select v-model="messageForm.type" size="mini">
                <el-option :value="1" label="通知消息" />
                <el-option :value="2" label="提示消息" />
                <el-option :value="3" label="重要消息" />
                <el-option :value="4" label="紧急消息" />

              </el-select>
            </el-form-item>
            <el-form-item label="通知内容">
              <el-input v-model="messageForm.content" type="textarea" :rows="4" place-holder="通知内容的长度在5-100个字符" />
            </el-form-item>
          </el-form>

          <!-- 群发通知 -->
          <template #footer>
            <el-row type="flex" justify="end">
              <el-button size="mini" @click="btnCancelSend">取消</el-button>
              <el-button size="mini" type="primary" @click="btnSendMultiMessage">发送通知</el-button>
            </el-row>
          </template>

        </el-dialog>

      </div>
      <!-- 上传 -->
      <ImportExcel :show-excel-dialog.sync="showExcelDialog" />
    </div>
  </div>

</template>

<script>
import { delEmployeeAPI, exportEmployeeAPI, getEmployeeDetailAPI, getEmployeeListAPI, sendMultiMessageAPI } from '@/api/employee'
import { getDepartmentAPI } from '@/api/request'
import { transObjToTree } from '@/utils'
import FileSaver from 'file-saver'
import ImportExcel from './components/import-excel'
import { assignRoleAPI, getEnableRoleListAPI } from '@/api/role'
export default {
  name: 'Employee',
  components: {
    ImportExcel
  },
  data() {
    return {
      depts: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      // 存储查询参数
      queryParams: {
        departmentId: null,
        page: 1,
        pagesize: 5,
        keyword: ''
      },
      employeeList: [],
      total: 0,
      showExcelDialog: false,
      // --------------------
      showRoleDialog: false, // 用来控制角色弹层的显示
      roleList: [], // 接收角色列表
      roleIds: [],
      currentUserId: null, // 用来记录当前点击的用户id
      selectUsers: {}, // 存储每一页的用户 如  {1: [], 2: [], 3: [] ...}
      showMultiMessageDialog: false,
      messageForm: {
        type: 1, // 1 通知消息 2 提示消息 3  重要消息 4 紧急消息
        content: ''
      }
    }
  },
  computed: {
    // 获取所有选中的id
    all_users() {
      // 将数组平铺开
      return [...Object.values(this.selectUsers).flat()]
    }
  },
  created() {
    this.getDepts()
  },
  methods: {
    // 发送消息
    async btnSendMultiMessage() {
      if (!this.all_users.length) {
        return this.$message.warning('发送的用户不能为空')
      }
      if (!this.messageForm.content) {
        return this.$message.warning('消息内容不能为空')
      }
      await sendMultiMessageAPI({
        userIds: this.all_users.map(item => item.id), // [{ id: 11 }]  //[1,2,3,4,4]
        ...this.messageForm // type content
      })
      this.$message.success('群发消息成功')
      this.messageForm = {
        type: 1,
        content: ''
      }
      this.showMultiMessageDialog = false
    },
    btnCancelSend() {
      this.showMultiMessageDialog = false
    },
    delSendUser(item) {
      // item哪一页的？？？？
      // 删除selectUser中的数据
      // 页面上取消勾选
      Object.keys(this.selectUsers).forEach(key => {
        const index = this.selectUsers[key].findIndex(row => row.id === item.id)
        if (index > -1) {
          this.selectUsers[key].splice(index, 1) // 删除存储的数据
          this.$refs.employeeTable.toggleRowSelection(item, false) // 页面上取消勾选
        }
      }) // [1,2,3,4,5...]
    },
    // 群发消息
    sendMultiMessage() {
      if (!this.all_users.length) {
        return this.$message.warning('请先选择要群发的员工')
      }
      this.showMultiMessageDialog = true
    },
    // 选择发生变化
    selectChange(selectRows) {
      // 去重
      this.selectUsers = {
        ...this.selectUsers,
        [this.queryParams.page]: selectRows
      }
    },
    async getDepts() {
      const res = await getDepartmentAPI()
      // console.log(res)
      this.depts = transObjToTree(res, 0)
      // 获取数据以后再给当前选中节点的值
      this.queryParams.departmentId = this.depts[0].id
      // 设置选中节点
      // 树组件渲染是异步的 等到更新完毕
      this.$nextTick(() => {
        // 此时意味着树渲染完毕
        this.$refs.deptTree.setCurrentKey(this.queryParams.departmentId)
      })
      this.getEmployeeList()
    },
    selectNode(node) {
      this.queryParams.departmentId = node.id
      this.queryParams.page = 1 // 设置第一页
      this.getEmployeeList()
    },
    async getEmployeeList() {
      const { rows, total } = await getEmployeeListAPI(this.queryParams)
      this.employeeList = rows
      this.total = total
    },
    // 切换页码
    async changePage(page) {
      this.queryParams.page = page // 赋值新页码
      await this.getEmployeeList() // 查询数据
      // 切换页码处理选中问题
      this.$refs.employeeTable.store.states.selection = this.selectUsers[this.queryParams.page] || []
      this.$refs.employeeTable.store.updateSelectionByRowKey() // 重新计算selection
      this.$refs.employeeTable.store.updateAllSelected() // 计算全选
    },
    changeValue() {
      // 单位时间内只执行最后一次
      // this的实例上赋值了一个timer的属性
      clearTimeout(this.timer) // 清理上一次的定时器
      this.timer = setTimeout(() => {
        this.queryParams.page = 1
        this.getEmployeeList()
      }, 300)
    },
    // 导出员工数据
    async exportEmployee() {
      const res = await exportEmployeeAPI()
      console.log(res)
      FileSaver.saveAs(res, '员工数据.xlsx')
    },
    async delEmployee(id) {
      await delEmployeeAPI(id)
      this.$message.success('删除成功')
      if (this.employeeList.length === 1 && this.queryParams.page > 1) {
        this.queryParams.page -= 1
      }
      this.getEmployeeList()
    },
    optEdit(id) {
      this.$router.push({
        path: '/employee/detail',
        query: {
          id
        }
      })
    },
    /** ************** */
    async btnRole(id) {
      this.roleList = await getEnableRoleListAPI()
      this.currentUserId = id
      const { roleIds } = await getEmployeeDetailAPI(this.currentUserId)
      this.roleIds = roleIds
      this.showRoleDialog = true
    },
    async btnOK() {
      await assignRoleAPI({
        id: this.currentUserId,
        roleIds: this.roleIds
      })
      this.$message.success('分配用户角色成功')
      this.showRoleDialog = false
    },
    btnCancel() {
      this.roleIds = []
      this.showRoleDialog = false
    }
  }

}
</script>

<style lang="scss" scoped>
.app-container {
  background: #fff;
  // flex布局
  display: flex;

  .left {
    width: 280px;
    padding: 20px;
    border-right: 1px solid #eaeef4;
  }

  .right {
    // 占满剩余空间
    flex: 1;
    padding: 20px;

    .opeate-tools {
      margin: 10px;
    }

    .username {
      height: 30px;
      width: 30px;
      line-height: 30px;
      text-align: center;
      border-radius: 50%;
      color: #fff;
      background: #04C9BE;
      font-size: 12px;
      display: inline-block;
    }
  }
}

.select_users {
  display: flex;
  flex-wrap: wrap;
  padding: 10px 10px;
  border: 1px solid #ccc;
  border-radius: 10px;

  span {
    margin: 6px 5px;
  }
}
</style>
